   body {
            font-family: Arial, sans-serif;
            margin: 0;
            padding: 0;
            background-color: #f4f4f4;
        }

        .container {
            width: 80%;
            margin: 20px auto;
            background-color: #fff;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
        }

        h1 {
            text-align: center;
            color: #333;
        }

        table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 20px;
        }

        table th, table td {
            border: 1px solid #ddd;
            padding: 10px;
            text-align: left;
        }

        table th {
            background-color: #f2f2f2;
        }

        table tr:nth-child(even) {
            background-color: #f9f9f9;
        }

        table tr:hover {
            background-color: #f2f2f2;
        }

        a {
            text-decoration: none;
            color: #007bff;
            margin-right: 10px;
        }

        a:hover {
            text-decoration: underline;
        }

        button {
            background-color: #dc3545;
            color: #fff;
            border: none;
            padding: 5px 10px;
            cursor: pointer;
            border-radius: 5px;
        }

        button:hover {
            background-color: #c82333;
        }

        .add-button {
            display: block;
            text-align: center;
            margin-top: 20px;
        }